Needs validationmedium risk
JST PH SMT 3-pin side-entry header with matching 2A/100V ratings.
Best Alternatives to B3B-PH-SM4-TB(LF)(SN)
B3B-PH-SM4-TB(LF)(SN) is a JST PH 3-pin 2.0mm SMT top-entry shrouded header. Alternatives need footprint and mating checks.
AI replacement insight
Electrical risklow
Kept PH options match 2A/100V.
Package riskhigh
Most options are through-hole or side-entry.
Firmware risklow
Passive connector.
Sourcing riskmedium
One kept lifecycle is unknown.
Can it be replaced directly?
Direct replacement for B3B-PH-SM4-TB(LF)(SN) should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
Use S3B-PH-SM4-TB(LF)(SN) only if side-entry SMT layout is acceptable.
Main risk
Mechanical footprint and cable-entry direction.
Recommended alternatives
3Alternative comparison matrix
| Feature / factor | B3B-PH-SM4-TB(LF)(SN) | S3B-PH-SM4-TB(LF)(SN) | B3B-PH-K-S(LF)(SN) | S3B-PH-K-S(LF)(SN) | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SMT Header | SMT | - | - | Through Hole — not SMT-compatible |
| Pinout | 3 pos, 1 row, top | 3 pos, 1 row, side | - | - | side-entry — orientation differs |
| Current | 2 A | 2 A | - | - | 2 A — ES rating matches |
| Voltage | 100 V | 100 V | - | - | 100 V — ES rating matches |
| Lifecycle | Active | Active | - | - | Active — catalog active |
| Temperature | -25 to 85C | - | -25 to 85C | - | -25 to 85C — ES range matches |
Application & sourcing insights
Questions & answers
Verified drop-in options for B3B-PH-SM4-TB(LF)(SN) are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.